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Switching Power Converters, 2nd Edition by Dorin O. Neacsu

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15

AC/DC and DC/AC Current Source Converters

15.1    INTRODUCTION

Most of the other Chapters of the book dealt with the Voltage Source Converter, a power converter structure built of 6 bi-directional switches and supplied from a voltage source. An alternative topology consists of a Current Source Converter [1,2,3] (Figure 15.1). Such converter structure is built of 6 unidirectional switches and it is supplied from a current source. This means the converter must always ensure a current circulation and a path for this current. Furthermore, the current circulation is unidirectional from the DC current source to the load (for a Current Source Inverter), or from the AC grid to the DC current load (for an AC/DC Current Source Converter). The possible ...

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